"
From https://www.vanityfair.com/video/watch/slang-school-ricky-gervais-teaches-you-british-slang
"Pants.
Well, two, there's two slang really,
pants is short for underwear, underpants,
you use it to mean trousers, we don't,
but pants in the slang sense strictly would mean rubbish,
that is absolute pants, that is awful,
it's not worth the trouble,
don't go and see that film, it's pants, rubbish."